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DI-471
DIAGNOSTICS - CRUISE CONTROL SYSTEM (DENSO Made)
DI0QV-04

PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
(1) Turn the ignition switch ON.
(2) Check that the CRUISE MAIN indicator light comes
on when the cruise control main switch is turned on,
and that the indicator light goes off when the main
switch is turned OFF.
I00003
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting (See page BE-2 ) for the combination meter
section.

(b) Check the DTC.
Indicator Light
HINT:
If a malfunction occurs in the No. 1 vehicle speed sensor or ac-
1.5 sec. 0.5 sec.
tuator, etc. during cruise control driving, the ECU actuates
AUTO CANCEL of the cruise control and turns ON and OFF the
ON
CRUISE MAIN indicator light to inform the driver of a malfunc-
tion. At the same time, the malfunction is stored in memory as
OFF a diagnostic trouble code.
BE4034

DLC1
(c) Using diagnosis check wire, check the output of DTC.
E1 TC
(1) Turn the ignition switch ON.
(2) Using SST, connect terminals Tc and E1 of DLC1.
SST 09843-18020
(3) Read the DTC on the CRUISE MAIN indicator light.

I00002

2002 4RUNNER (RM887U)

Author : Date : 647
DI-472
DIAGNOSTICS - CRUISE CONTROL SYSTEM (DENSO Made)

Normal Code HINT:
If the DTC is not output, inspect the diagnosis circuit.
0.25 sec. As an example, the blinking patterns for codes; normal 11 and
0.25 sec.
21 are shown in the illustration.

OFF

Malfunction codes 11 and 21
0.5 sec. 0.5 sec.

4 sec. 1.5 sec. 2.5 sec. 1.5 sec.

OFF
Code 11 Code 21
BE4032
BE4033 I00021

TOYOTA hand-held tester 2. ECU TERMINAL VALUES MEASUREMENT BY USING
TOYOTA BREAK-OUT-BOX AND TOYOTA HAND-
HELD TESTER
(a) Hook up the TOYOTA break- out- box and TOYOTA
hand-held tester to the vehicle.
(b) Read the ECU input/output values by following the
prompts on the tester screen.
HINT:
TOYOTA Break-out-box N09348 TOYOTA hand-held tester has a "Snapshot" function. This re-
cords the measured values and is effective in the diagnosis of
intermittent problems.
Please refer to the TOYOTA hand-held tester/TOYOTA break-
out-box operator's manual for further details.

3. DTC CLEARANCE (ERASE MODE)
(d) 5 times
(b) HINT:
DLC1 Within 3 seconds
Under the erase mode, diag detection does not work.
(a) Drive at about 15 km/h or below.
(b) Using SST, connect terminals Tc and E1 of DLC1.
SST 09843-18020
(c) Pull the cruise control switch to CANCEL.
E1 TC (c) (d) On the above metioned condition, turn on the cruise con-
I01915 trol main switch 5 times within 3 seconds.

2002 4RUNNER (RM887U)

Author : Date : 648
DI-473
DIAGNOSTICS - CRUISE CONTROL SYSTEM (DENSO Made)

4. PROBLEM SYMPTOM CONFIRMATION
(ROAD TEST)
(a) Inspect the SET switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) Press the control switch to the SET/COAST.
(4) After releasing the switch, check that the vehicle
I00001 cruises at the desired speed.

(b) Inspect the ACCEL switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) Press the control switch to the SET/COAST.
(4) Check that the vehicle speed increases while the
control switch is turned to RES/ACC, and that the
vehicle cruises at the set speed when the switch is
I00001 released.
(5) Momentarily press the control switch upward to
RES/ACC and then immediately release it. Check
that the vehicle speed increases by about 1.6 km/h
(1 mph) (Tap-up function).

(c) Inspect the COAST.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) Press the control switch to the SET/COAST.
(4) Check that the vehicle speed decreases while the
control switch is turned to SET/COAST, and the ve-
hicle cruises at the set speed when the switch is re-
I00001 leased.
(5) Momentarily press the control switch downward to
SET/COAST, and then immediately release it.
Check that the vehicle speed decreases by about
1.6 km/h (1 mph) (Tap-down function).

2002 4RUNNER (RM887U)

Author : Date : 649
DI-474
DIAGNOSTICS - CRUISE CONTROL SYSTEM (DENSO Made)

(d) Inspect the CANCEL switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) Press the control switch to the SET/COAST.
(4) When operating one of the followings, check that
the cruise control system is cancelled and that the
normal driving mode is reset.
I00001 S Depress the brake pedal
S Depress the clutch pedal (M/T)
S Shift to except D position (A/T)
S Turn the main switch OFF
S Pull the cruise control switch to CANCEL

(e) Inspect the RESUME switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) Press the control switch to the SET/COAST.
(4) When operating one of the followings, check that
the cruise control system is cancelled and that the
normal driving mode is reset.
I00001 S Depress the brake pedal
S Depress the clutch pedal (M/T)
S Shift to except D position (A/T)
S Pull the cruise control switch to CANCEL
(5) After the control switch is turned to RES/ACC at the
driving speed of more than 40 km/h (25 mph), check
that the vehicle restores the speed prior to the can-
cellation.

2002 4RUNNER (RM887U)

Author : Date : 650
DI-475
DIAGNOSTICS - CRUISE CONTROL SYSTEM (DENSO Made)

5. INPUT SIGNAL CHECK
1
HINT:
(1) For check No.1 No.2
S Turn the ignition switch ON.
2
(2) For check No.3
S Turn ignition switch ON.
S Shift to D position.
(3) For check No.4
1
BE6443 S Jack up the vehicle.
S Start the engine.
S Shift to D position.
(a) Press the control switch to SET/COAST or RES/ACC
position and hold it down or hold it up respecively (1)
(b) Push the main switch ON (2).
(c) Check that the CRUISE MAIN indicator light blinks twice
or 3 times repeatedly after 3 seconds.
(d) Turn the SET/COAST or RES/ACC switch OFF.
(e) Operate each switch as listed in the table below.
(f) Read the blinking pattern of the CRUISE MAIN indicator
light.
(g) After performing the check, turn the main switch OFF.
HINT:
When 2 or more signals are input to the ECU, the lowest num-
bered code will be displayed first.
CRUISE MAIN Indicator Light Diagnosis
No. Operation Method Blinking Pattern
0.25 sec. 0.25 sec.
ON
1 Turn SET/COAST switch ON Light 1sec. SET/COAST switch circuit
is normal
OFF
ON
2 Turn RES/ACC switch ON Light RES/ACC switch circuit
OFF is normal

ON Switch OFF CANCEL switch circuit
Turn CANCEL switch ON Light
Switch ON is normal
OFF
Turn stop light switch ON Stop light switch circuit
Depress brake pedal is normal
3
Turn Park/Neutral Position
Park/Neutral Position switch
switch OFF
Switch ON circuit is normal
(Shift to except D position) ON
Light
Switch OFF
Turn clutch switch OFF OFF Clutch switch circuit is
(Depress clutch pedal) normal

Drive at about 40 km/h Light ON
(25 mph)or higher OFF
Vehicle Speed Sensor is
4
normal
Drive at about 40 km/h ON
Light
(25 mph) or below OFF

2002 4RUNNER (RM887U)

Author : Date : 651

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